Just for reference, when we complain about "Slow Barrels" in a Tikka, It's about 100 FPS with factory SAAMI spec ammo.
Tikka cuts the throat on the 6.5 CM like a giraffe - It's Looonnngggg for factory ammo.
You start handloading and load long high BC bullets to short ogive to rifling dimensions and you can utilize the additional powder capacity to regain velocity.